I guess you could say this post was timely, given the recent discussions of control systems.
Although my main product line is catering for Live Steam R/C, I am making a couple of dedicated DSM2 Digital Proportional Tx hand-pieces just for Battery R/C.
Unlike regular stick radios which work 90º either side of neutral, RCS hand-piece knobs use 150º degrees of speed control, either side of neutral. That equals much finer speed control.
There are two items in the RCS EVOLUTION range.
The # EVO-BATT is for simple entry level battery R/C. It can handle 1 x loco for Centre OFF control with three sound triggers.
The other item is # EVO-BATT-DUO. This allows 2 x Centre OFF control Locos to be operated simultaneously from the one Tx handpiece. Cab “A” & Cab “B” each have 2 x independent sound triggers.
Three Suitable VIPER ESC’s from 3 amps @ 12 volts to 12 amps @ 24 volts are a perfect match.